Hello, just for training, i try to write simple driver he have role to write text into console on real mode.

But i have problem, i need to do MOV TARGET,SOURCE instruction with calculated variables adress for target and source. How is it possible to do that. I try many idea, but i don't have any success to compile. (Without interrupt)

If you can calculate the addresses then the general solution is a PUSH/POP. In the rare case you don't have a stack, you'll need to store the value in a temporary register or memory space.

Fulgurance, do you mean computing the address of the characters on the text mode screen?

Something like this:
address = (y * 80 + x) * 2 + base
Where x and y are the coordinates of the character and the "* 2" is for two bytes per character, with the final "base" being the screen buffer start address.

To do that in code you need to write a sequence of instructions with intermediate values. It can't be done with a single "mov [(y * 80 + x) * 2 + base],character".